 The term is coming more into use to differentiate light 4x4 wheeled APCs from the traditional 8x8 wheeled APCs.The up-armored M1114 Humvee variant can be seen as an adaptation of the unarmoured Humvee to serve in the IMV role.In 1994, the Australian Department of Defence identified the need to mobilise infantry through the acquisition of unprotected and protected vehicles.